11611623 has 8 divisors (see below), whose sum is σ = 15505648. Its totient is φ = 7729344.

The previous prime is 11611609. The next prime is 11611627. The reversal of 11611623 is 32611611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11611623 - 2⁶ = 11611559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11611623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (1938206).

Almost surely, 2^11611623 is an apocalyptic number.

11611623 is a deficient number, since it is larger than the sum of its proper divisors (3894025).

11611623 is an equidigital number, since it uses as much as digits as its factorization.

11611623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5873.

The product of its digits is 216, while the sum is 21.

The square root of 11611623 is about 3407.5831611275. The cubic root of 11611623 is about 226.4458203135.

The spelling of 11611623 in words is "eleven million, six hundred eleven thousand, six hundred twenty-three".